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Lab Vacuum Sigma Kneader

Name: Lab Vacuum Sigma Kneader
Brand: KARVIL
Rating: 5.0 (44 reviews)

Specifications:

Total Volume: 7 Liters
Working Volume: 2.1 - 5 Liters
Main Motor: 2.2 kW, 4-pole (Siemens Beide)
Blade Type: Sigma (Z-type) Blades, SS 304 (Mirror Polished)
Blade Speed: 0-42 rpm (Fast blade) / 0-35 rpm (Slow blade) - Inverter Controlled
Discharge Method: Manual tilt discharge via Handwheel
Heating System: Electric heating with thermal oil jacket (Max. 160℃)
Vacuum System: Included (Vacuum pump, buffer tank, metal hose)
Shaft Seal: Easy-to-replace combination seal box (PTFE packing & PTFE seal)
Safety Feature: Automatic stop limit switch on the top cover
Material: Contact parts: SS 304 (Mirror Polished) | Non-contact parts: Painted Carbon Steel

【Application Industry】：
Widely used in mixing and kneading of low-to-high viscosity products in many industries such as ceramics, silicone rubber, sealants, clay, chewing gum, candy, bakery food, pharmaceuticals, carbon paste, inks/pigments ,etc.

Karvil Machinery is the supplier of Siemens and provide the sigma blade mixer for its application

Model:
NH-7
Brand:
KARVIL


Availability:



Inquiry

Product Description

Standard Design（Customizable）:

Material: SUS 304, 316 or mild steel

Discharging: Tilting discharging/Screw extruding discharging/Bottom plate

Heating: Electric heating/Water heating/Oil heating/Steam heating

Cooling: Water cooling/Jacket cooling

Vacuum: Water-ring vacuum pump/ buffer tank.

Motor: Explosion proof motor

Independent Control Panel: Variable speed/ Temperature/Discharging

Working Volume: 5 to10,000 Cubic Feet (from experiment to production)

Lab-Scale-Horizontal-Sigma-Mixer-with-CE-Certification

Lab-Scale-Sigma -Z-Blade-Kneader-Mixer-2

Product Overview

Engineered for precision and high performance, the 7L Vacuum Electric Heating Sigma Kneader is the perfect solution for laboratory research and small-scale production. Specifically customized for processing advanced ceramics, highly viscous pastes, and polymers, this machine ensures a homogeneous mix under vacuum conditions to eliminate air bubbles. Equipped with a reliable Siemens motor and a robust electric heating jacket, it guarantees stable operation and precise temperature control up to 160℃.

Key Features

European Standard Safety : Features a built-in safety limit switch. The mixing process stops instantly if the top cover is opened, ensuring operator safety.
Premium Material & Finish: All contact parts, including the Sigma blades, mixing chamber, and cover, are made of SS 304 with a flawless mirror-polished finish to prevent material adhesion and ensure easy cleaning.
Advanced Sealing System: Innovative combination seal box design allows for easy packing replacement. Utilizes PTFE (Teflon) packing and seals to prevent any leakage or contamination.
Precise Control): Variable frequency drive (VFD) controls the Z-blade speeds (Fast: 0-42 rpm; Slow: 0-35 rpm) to adapt to different ceramic material viscosities.
Integrated Vacuum & Heating : Comes with a complete vacuum system (pump, buffer tank, metal hose) for bubble-free mixing. Electric heating via thermal oil reaches up to 160℃.

Please contact us and we will assist you in developing the right solution for you. There is also a production size z blade mixer available. Click here.

Technical Parameters

Type		NH-5	NH-10	NH-100	NH-300	NH-500	NH-1000	NH-1500	NH-2000	NH-3000	NH-4000	NH-5000
Total Volume (L)		5	10	100	300	500	1000	1500	2000	3000	4000	5000
Mixed amount/batch (L)		1.5-3.5	3.0-7	30-70	90-210	150-350	300-700	450-1050	600-1400	900-2100	1200-2800	1500-3500
Rotation Speed (rpm)		42/34	42/34	37/21	37/22	37/23	37/26	37/22	30/21	30/21	30/20	28/18
Main Motor Power (Kw)		0.75-1.5	1.1-3	5.5-11	7.5-30	15-37	22-90	22-90	30-110	30-110	45-110	55-132
Heating Methods	Steam Pressure (MPa)	Jacket for steam ≤0.3MPa
Heating Methods	Electric Power (Kw)	2.4	2.4	6	12	18	30	45	54	72	72	90
Vacuum (MPa)		0~ -0.096Mpa (Vacuum Kneader)
Discharging Method		Tilting cylinder
Discharging Method		Screw extrusion

Our Services

LABORATORY TEST

In order to be able to demonstrate the advantages and modes of action of our industrial mixing machine with your products, our fully equipped modern laboratory/technical center is at your disposal.

PROFESSIONAL ENGINEER

The experienced team of engineers is specialized in the R&D and design of mixers, grinding equipment, and plastic recycling machine. Karvil explores new technical points constantly to create perfect solutions for customers.

DIRECT FACTORY

Karvil factory has a series of strict standard system to control the procurement of raw materials, manufacturing process, in-process inspection, and product inspection, so as to ensure the quality of our products.

Applications

F.A.Q.

1.Manufacturer or trading company?

We are a professional manufacturer with over 20 years of experience, specializing in Sigma Mixers, Ribbon Blenders, and Planetary Mixers. Unlike trading companies, we have our own R&D team and strict quality control system, which allows us to offer direct factory prices and technical support.

2.What is the main market for your company?

Our machines have been exported to over 50 countries, including markets in Europe, America,Australia and Southeast Asia. We serve industries ranging from chemicals, energetic materials, adhesives, and sealants to food and pharmaceuticals.

3.How do you ensure the quality of the machine before delivery?

Quality is our priority. After production, we conduct a strict FAT (Factory Acceptance Test). We run the machine empty and with load (if applicable) for continuous hours to check noise, vibration, sealing, and temperature. We will send you a detailed running video. You are also welcome to visit or hire a third party (like SGS/BV) for inspection.

4.Can I track the production progress of my order?

Yes. During the production process, our sales team will update you with photos and videos of key stages (machining, welding, assembly, painting) so you can know exactly the status of your equipment.

5.How about the installation and services?

We provide comprehensive support:

Documents: Detailed English manual, electric diagram.

Online Support: Lifetime remote video guidance for installation and troubleshooting.

On-site Service: If needed, we can dispatch engineers to your factory for installation, commissioning, and staff training.

6.How do you pack the machine to ensure safety during long shipping?

We use export-standard plywood cases ensuring stability. For the machine surface, we wrap it with multiple layers of stretch film to prevent moisture and corrosion during sea transportation.

7.Can you provide customized products?

Yes, we have professional engineers to meet your special design needs, so we can provide customized products.

8. What are the payment terms and delivery time?

Production begins after confirming details and receiving a 50% deposit. It usually takes 20-30 days. Once you approve the machine via test videos or on-site inspection, we will arrange shipment immediately after the balance payment.

9.About the product warranty?

We provide 12-month warranty starting. Within the warranty period, we provide free replacement parts with DHL/Fedex . Beyond the warranty, we offer cost-price spare parts and lifetime technical support.